Changeset 94d211e in mainline for kernel/genarch/src/mm/page_pt.c

Timestamp:

2018-03-21T19:32:48Z (7 years ago)

Author:

Jiří Zárevúcky <zarevucky.jiri@…>

Children:

1c7a170

Parents:

973be387

Message:

Change the way page flags work. TODO description

File:

• kernel/genarch/src/mm/page_pt.c (modified) (6 diffs)

kernel/genarch/src/mm/page_pt.c

@@ -55 +55 @@
 static void pt_mapping_remove(as_t *, uintptr_t);
 static bool pt_mapping_find(as_t *, uintptr_t, bool, pte_t *pte);
-static void pt_mapping_update(as_t *, uintptr_t, bool, pte_t *pte);
+static void pt_mapping_update(as_t *, uintptr_t, bool, const pte_t *pte);
 static void pt_mapping_make_global(uintptr_t, size_t);
 
@@ -90 +90 @@
                 SET_PTL1_ADDRESS(ptl0, PTL0_INDEX(page), KA2PA(newpt));
                 SET_PTL1_FLAGS(ptl0, PTL0_INDEX(page),
-                    PAGE_NOT_PRESENT | PAGE_USER | PAGE_EXEC | PAGE_CACHEABLE |
-                    PAGE_WRITE);
+                    PAGE_NOT_PRESENT | PAGE_NEXT_LEVEL_PT);
                 /*
                  * Make sure that a concurrent hardware page table walk or
@@ -109 +108 @@
                 SET_PTL2_ADDRESS(ptl1, PTL1_INDEX(page), KA2PA(newpt));
                 SET_PTL2_FLAGS(ptl1, PTL1_INDEX(page),
-                    PAGE_NOT_PRESENT | PAGE_USER | PAGE_EXEC | PAGE_CACHEABLE |
-                    PAGE_WRITE);
+                    PAGE_NOT_PRESENT | PAGE_NEXT_LEVEL_PT);
                 /*
                  * Make the new PTL2 visible only after it is fully initialized.
@@ -126 +124 @@
                 SET_PTL3_ADDRESS(ptl2, PTL2_INDEX(page), KA2PA(newpt));
                 SET_PTL3_FLAGS(ptl2, PTL2_INDEX(page),
-                    PAGE_NOT_PRESENT | PAGE_USER | PAGE_EXEC | PAGE_CACHEABLE |
-                    PAGE_WRITE);
+                    PAGE_NOT_PRESENT | PAGE_NEXT_LEVEL_PT);
                 /*
                  * Make the new PTL3 visible only after it is fully initialized.
@@ -353 +350 @@
  * @param[in] pte  New PTE.
  */
-void pt_mapping_update(as_t *as, uintptr_t page, bool nolock, pte_t *pte)
+void pt_mapping_update(as_t *as, uintptr_t page, bool nolock, const pte_t *pte)
 {
         pte_t *t = pt_mapping_find_internal(as, page, nolock);
@@ -431 +428 @@
                 SET_PTL1_ADDRESS(ptl0, PTL0_INDEX(addr), KA2PA(l1));
                 SET_PTL1_FLAGS(ptl0, PTL0_INDEX(addr),
-                    PAGE_PRESENT | PAGE_USER | PAGE_CACHEABLE |
-                    PAGE_EXEC | PAGE_WRITE | PAGE_READ);
+                    PAGE_NEXT_LEVEL_PT);
         }
 }